Numbers / 308

The Number 308

308 is composite: factorization 2^2 × 7 × 11. That gives 308 exactly 12 divisors: 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308. 308's proper divisors total 364, 56 more than 308 itself, so 308 is abundant. 308 has a digit sum of 11; for 308, the digital root works out to 2. 308: 2, 4, 7, 11 all divide 308 evenly, out of 2-12. 308 is 100110100 in binary and 134 in hex; as a Roman numeral it's CCCVIII.